Effects of Canada Goldenrod Invasion on Soil Extracellular Enzyme Activities and Ecoenzymatic Stoichiometry

Zhiyuan Hu, Jiating Li, Kangwei Shi, Guangqian Ren, Zhicong Dai, Jianfan Sun, Xiaojun Zheng, Yiwen Zhou, Jiaqi Zhang, Guanlin Li and Daolin Du
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Zhiyuan Hu: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Jiating Li: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Kangwei Shi: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Guangqian Ren: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Zhicong Dai: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Jianfan Sun: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Xiaojun Zheng: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Yiwen Zhou: Lincoln Agritech Ltd., Engineering Drive, Lincoln University, Lincoln 7674, New Zealand
Jiaqi Zhang: Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
Guanlin Li: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Daolin Du: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China

Sustainability, 2021, vol. 13, issue 7, 1-13

Abstract: The rapid expansion of Canada goldenrod ( Solidago canadensis L.) in China has drawn considerable attention as it may not only decrease vegetation diversity but also alter soil nutrient cycling in the affected ecosystems. Soil extracellular enzymes mediate nutrient cycling by catalyzing the organic matter decomposition; however, the mechanisms by which alien plant invasion may affect soil extracellular enzymes remain unclear. The objective of this study was to investigate the responses of soil extracellular enzyme activities and ecoenzymatic stoichiometry to S. canadensis invasion. Several extracellular enzymatic activities related to carbon, nitrogen, and phosphorus cycling were measured using a fluorometric method. Ecoenzymatic stoichiometry was used as a proxy of soil microbial metabolic limitations. S. canadensis invasion appeared to be associated with decreased activities of enzymes and with substantial conversions of microbial metabolic carbon and nitrogen limitations. The changes in the activities of extracellular enzymes and the limitations of microbial metabolism were correlated with the alterations in the nutrient availability and resource stoichiometry in the soil. These findings reveal that the alterations in soil available nutrients associated with S. canadensis invasion may regulate extracellular enzymatic activities and cause microbial metabolic limitations, suggesting that S. canadensis invasion considerably affects biogeochemical cycling processes.

Keywords: alien plant invasion; soil microbial metabolic limitation; soil available nutrient availability; Solidago canadensis L.; Phragmites australis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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